1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 * Copyright (c) 2012-2018 Cyril Hrubis <chrubis@suse.cz>
5 */
6
7 /*
8 * wait401 - check that a call to wait4() correctly waits for a child
9 * process to exit
10 */
11
12 #include <stdlib.h>
13 #include <errno.h>
14 #define _USE_BSD
15 #include <sys/types.h>
16 #include <sys/resource.h>
17 #include <sys/wait.h>
18 #include "tst_test.h"
19
run(void)20 static void run(void)
21 {
22 pid_t pid;
23 int status = 1;
24 struct rusage rusage;
25
26 pid = SAFE_FORK();
27 if (!pid) {
28 TST_PROCESS_STATE_WAIT(getppid(), 'S');
29 exit(0);
30 }
31
32 TEST(wait4(pid, &status, 0, &rusage));
33 if (TST_RET == -1) {
34 tst_res(TFAIL | TERRNO, "wait4() failed");
35 return;
36 }
37
38 if (TST_RET != pid) {
39 tst_res(TFAIL, "waitpid() returned wrong pid %li, expected %i",
40 TST_RET, pid);
41 } else {
42 tst_res(TPASS, "waitpid() returned correct pid %i", pid);
43 }
44
45 if (!WIFEXITED(status)) {
46 tst_res(TFAIL, "WIFEXITED() not set in status (%s)",
47 tst_strstatus(status));
48 return;
49 }
50
51 tst_res(TPASS, "WIFEXITED() is set in status");
52
53 if (WEXITSTATUS(status))
54 tst_res(TFAIL, "WEXITSTATUS() != 0 but %i", WEXITSTATUS(status));
55 else
56 tst_res(TPASS, "WEXITSTATUS() == 0");
57
58 }
59
60 static struct tst_test test = {
61 .forks_child = 1,
62 .test_all = run,
63 };
64